Improvement in condensers for vacuum-pans



C. W. DURANT & Je. GRIFFITH.

Improvement in Condensers for Vacuum Pans, &c.

Patented Oct-15,1872

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UNITED STATES PATENT OFFICE.

CHARLESW. DURANT AND JOHN GRIFFITH, `OF NEW YORK, N. Y.

IMPROVEMENT IN CONDENSERS FOR VACUUM-PANS, &c.

Specification forming part of Letters Patent No. 132,263, dated October 15, 1872.

those skilled in they art to make and use the same, reference being had to the accompanying drawing formingpart of this specification, in which drawing- Figure l represents a vertical central section of our condenser, and Fig. 2 is a horizontal section of the same in the plane waz, Fig. l. Similar letters indicate corresponding parts. This invention consists in the arrangement of a cooling jacket or apron in the interior of the condenser, said cooling-jacket being situated between the supply and the discharge pipes, in such a manner that the vapors passing from the vacuum-pan to the condenser through the supply-pipe are compelled to pass up through the water contained in said condenser, and then up to the discharge-pipe which connects with the air-pump, and by these means the condensible parts mixed with said vapors are ei'ectually prevented from passing oft' to the pump, and a correct action of the pump and-of the condenser is insured. The saccharine particles contained in the vapors which pass into the condenser are collected in a depression in the bottom of the condenser, whence they can be drawn oli' at suitable intervals. The water is injected into the condenser through a perforated, pipe, which is inserted through a stuffing-box so that it can be readily taken out for the purpose of cleaning.

In the drawing, the letter A designatesa condenser, which is made of cast-iron or any other suitable material, byv preference in the form of a cylinder.. Through the top of this condenser extends the water-supply or injection-pipe B, which is perforated, as shown, and which is made to pass through a stufng-box, C, so that a tight joint is produced between it and the top of the condenser; and furthermore, said water-supply pipe can be adjusted up or down as may be desired, and it can be readily taken out whenever it becomes necessary to clean it. The condenser A connects,-

by a pipe, D, with the vacuum-pan, and by pipes E E with the air-pump, and when the air-pump is in motion the vapors passing oif from the vacuum-pan are made to pass into the condenser through the pipe D, and thev non-condensed portion of said vapors pass off through the pipes E E. Between the vaporsupply pipe D and the injection-pipe B is situated a jacket or apron, F, which is made to conform in shape to the outside Wall of the condenser, and which is secured to the top of said condenser, and extends down within a certain distance from its bottom, and below the water-injection pipe contained in the condenser, as shown in Fig. l.

As the cooling water discharges through the perforations of the injection-pipe B it comes in contact with the jacket F and keeps the same cool, and the vapors admitted through the pipe D, on coming in contact with the jacket F, are cooled off and compelled to pass down through the air-chamber and then up through the water before being able to reach the discharge-pipes E E. By these means the condensible parts ofY said vapors are condensed and the particles of sugar which are mixed with said vapors are deposited in a recess, G, formed in the bottom of the condenser, whence they can be drawn off through a pipe, H. The water passes off fromthe condenser through a pipe, I. In the sides of the condenser we have insert-ed several eye-glasses, J, through which the interior of said condenser ca-n beinspected and the operation can be watched.

B your condenser all condensible parts mixed with thevapors which pass off from the vacuum-pan are retained, the saccharine particles mixed with said vapors are saved, and the correct operation of the air-pump is preserved.

` By referring to'Fig. l of the drawing it will be seen that the cooling-jacket extends below the bottom edge of the injection-pipe, and as the water discharges from the holes in the injection-pipe it strikes the inner wall of the cooling-jacket in an unbroken sheet, whereby said jacket is constantly kept cool and its effect is materially improved.

What we claim as new, and desire to secure by Letters Patent, is-

1. The arrangement of a cooling jacket or apron between the vapor-supply pipe of a condenser and the injection-pipe, said jacket or 3. The arrangement of the injection-pipe B, apron being made to dip beneath the bottom being connected to the head ofthe condenser end of the injection-pipe in the condenser, by means of a stuffing-box, which allows of adsubstantially in the manner herein shown and justing the same and of removing it Whenever described. it may be required.

2. In combination With the coolinCf-jacket We claim a recess formed in the botton of the CHARLES W DURANT condenser7 for the purpose of collecting sac- JOHN GRIFF 1TH' charine particles mixed With the vapors which Witnesses pass over from the vacuum-pan, substantially W. HAUFF,

as set forth. E. F. KASTENHUBER. 

